staging:iio:gyro:adis16130 stub removal and cleanup

Get rid of unused stubs for trigger and buffer support.
Fix line length issues.

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/iio/gyro/adis16130.h b/drivers/staging/iio/gyro/adis16130.h
index ab80ef6..9efc4c7 100644 (file)
--- a/drivers/staging/iio/gyro/adis16130.h
+++ b/drivers/staging/iio/gyro/adis16130.h
@@ -4,7 +4,9 @@
 #define ADIS16130_CON         0x0
 #define ADIS16130_CON_RD      (1 << 6)
 #define ADIS16130_IOP         0x1
-#define ADIS16130_IOP_ALL_RDY (1 << 3) /* 1 = data-ready signal low when unread data on all channels; */
+
+/* 1 = data-ready signal low when unread data on all channels; */
+#define ADIS16130_IOP_ALL_RDY (1 << 3)
 #define ADIS16130_IOP_SYNC    (1 << 0) /* 1 = synchronization enabled */
 #define ADIS16130_RATEDATA    0x8 /* Gyroscope output, rate of rotation */
 #define ADIS16130_TEMPDATA    0xA /* Temperature output */
@@ -23,86 +25,18 @@
 /**
  * struct adis16130_state - device instance specific data
  * @us:                        actual spi_device to write data
- * @work_trigger_to_ring: bh for triggered event handling
- * @inter:             used to check if new interrupt has been triggered
- * @last_timestamp:    passing timestamp from th to bh of interrupt handler
  * @indio_dev:         industrial I/O device structure
- * @trig:              data ready trigger registered with iio
  * @tx:                        transmit buffer
  * @rx:                        recieve buffer
  * @buf_lock:          mutex to protect tx and rx
  **/
 struct adis16130_state {
        struct spi_device               *us;
-       struct work_struct              work_trigger_to_ring;
-       s64                             last_timestamp;
        struct iio_dev                  *indio_dev;
-       struct iio_trigger              *trig;
        u8                              *tx;
        u8                              *rx;
        u32                             mode; /* 1: 24bits mode 0:16bits mode */
        struct mutex                    buf_lock;
 };
 
-#if defined(CONFIG_IIO_RING_BUFFER) && defined(THIS_HAS_RING_BUFFER_SUPPORT)
-/* At the moment triggers are only used for ring buffer
- * filling. This may change!
- */
-
-enum adis16130_scan {
-       ADIS16130_SCAN_GYRO,
-       ADIS16130_SCAN_TEMP,
-};
-
-void adis16130_remove_trigger(struct iio_dev *indio_dev);
-int adis16130_probe_trigger(struct iio_dev *indio_dev);
-
-ssize_t adis16130_read_data_from_ring(struct device *dev,
-                                     struct device_attribute *attr,
-                                     char *buf);
-
-
-int adis16130_configure_ring(struct iio_dev *indio_dev);
-void adis16130_unconfigure_ring(struct iio_dev *indio_dev);
-
-int adis16130_initialize_ring(struct iio_ring_buffer *ring);
-void adis16130_uninitialize_ring(struct iio_ring_buffer *ring);
-#else /* CONFIG_IIO_RING_BUFFER */
-
-static inline void adis16130_remove_trigger(struct iio_dev *indio_dev)
-{
-}
-
-static inline int adis16130_probe_trigger(struct iio_dev *indio_dev)
-{
-       return 0;
-}
-
-static inline ssize_t
-adis16130_read_data_from_ring(struct device *dev,
-                             struct device_attribute *attr,
-                             char *buf)
-{
-       return 0;
-}
-
-static int adis16130_configure_ring(struct iio_dev *indio_dev)
-{
-       return 0;
-}
-
-static inline void adis16130_unconfigure_ring(struct iio_dev *indio_dev)
-{
-}
-
-static inline int adis16130_initialize_ring(struct iio_ring_buffer *ring)
-{
-       return 0;
-}
-
-static inline void adis16130_uninitialize_ring(struct iio_ring_buffer *ring)
-{
-}
-
-#endif /* CONFIG_IIO_RING_BUFFER */
 #endif /* SPI_ADIS16130_H_ */

diff --git a/drivers/staging/iio/gyro/adis16130_core.c b/drivers/staging/iio/gyro/adis16130_core.c
index 49ffc7b..04d81d4 100644 (file)
--- a/drivers/staging/iio/gyro/adis16130_core.c
+++ b/drivers/staging/iio/gyro/adis16130_core.c
@@ -25,11 +25,7 @@
 
 #include "adis16130.h"
 
-#define DRIVER_NAME            "adis16130"
-
-struct adis16130_state *adis16130_st;
-
-int adis16130_spi_write(struct device *dev, u8 reg_addr,
+static int adis16130_spi_write(struct device *dev, u8 reg_addr,
                u8 val)
 {
        int ret;
@@ -46,7 +42,7 @@ int adis16130_spi_write(struct device *dev, u8 reg_addr,
        return ret;
 }
 
-int adis16130_spi_read(struct device *dev, u8 reg_addr,
+static int adis16130_spi_read(struct device *dev, u8 reg_addr,
                u32 *val)
 {
        int ret;
@@ -148,7 +144,8 @@ static IIO_DEV_ATTR_GYRO(adis16130_gyro_read,
 #define IIO_DEV_ATTR_BITS_MODE(_mode, _show, _store, _addr)    \
        IIO_DEVICE_ATTR(bits_mode, _mode, _show, _store, _addr)
 
-static IIO_DEV_ATTR_BITS_MODE(S_IWUSR | S_IRUGO, adis16130_bitsmode_read, adis16130_bitsmode_write,
+static IIO_DEV_ATTR_BITS_MODE(S_IWUSR | S_IRUGO, adis16130_bitsmode_read,
+                       adis16130_bitsmode_write,
                        ADIS16130_MODE);
 
 static struct attribute *adis16130_event_attributes[] = {
@@ -173,7 +170,7 @@ static const struct attribute_group adis16130_attribute_group = {
 
 static int __devinit adis16130_probe(struct spi_device *spi)
 {
-       int ret, regdone = 0;
+       int ret;
        struct adis16130_state *st = kzalloc(sizeof *st, GFP_KERNEL);
        if (!st) {
                ret =  -ENOMEM;
@@ -211,50 +208,14 @@ static int __devinit adis16130_probe(struct spi_device *spi)
        st->indio_dev->modes = INDIO_DIRECT_MODE;
        st->mode = 1;
 
-       ret = adis16130_configure_ring(st->indio_dev);
-       if (ret)
-               goto error_free_dev;
-
        ret = iio_device_register(st->indio_dev);
        if (ret)
-               goto error_unreg_ring_funcs;
-       regdone = 1;
-
-       ret = adis16130_initialize_ring(st->indio_dev->ring);
-       if (ret) {
-               printk(KERN_ERR "failed to initialize the ring\n");
-               goto error_unreg_ring_funcs;
-       }
-
-       if (spi->irq && gpio_is_valid(irq_to_gpio(spi->irq)) > 0) {
-               ret = iio_register_interrupt_line(spi->irq,
-                               st->indio_dev,
-                               0,
-                               IRQF_TRIGGER_RISING,
-                               "adis16130");
-               if (ret)
-                       goto error_uninitialize_ring;
-
-               ret = adis16130_probe_trigger(st->indio_dev);
-               if (ret)
-                       goto error_unregister_line;
-       }
+               goto error_free_dev;
 
-       adis16130_st = st;
        return 0;
 
-error_unregister_line:
-       if (st->indio_dev->modes & INDIO_RING_TRIGGERED)
-               iio_unregister_interrupt_line(st->indio_dev, 0);
-error_uninitialize_ring:
-       adis16130_uninitialize_ring(st->indio_dev->ring);
-error_unreg_ring_funcs:
-       adis16130_unconfigure_ring(st->indio_dev);
 error_free_dev:
-       if (regdone)
-               iio_device_unregister(st->indio_dev);
-       else
-               iio_free_device(st->indio_dev);
+       iio_free_device(st->indio_dev);
 error_free_tx:
        kfree(st->tx);
 error_free_rx:
@@ -271,14 +232,6 @@ static int adis16130_remove(struct spi_device *spi)
        struct adis16130_state *st = spi_get_drvdata(spi);
        struct iio_dev *indio_dev = st->indio_dev;
 
-       flush_scheduled_work();
-
-       adis16130_remove_trigger(indio_dev);
-       if (spi->irq && gpio_is_valid(irq_to_gpio(spi->irq)) > 0)
-               iio_unregister_interrupt_line(indio_dev, 0);
-
-       adis16130_uninitialize_ring(indio_dev->ring);
-       adis16130_unconfigure_ring(indio_dev);
        iio_device_unregister(indio_dev);
        kfree(st->tx);
        kfree(st->rx);